fix(core-utils): trim spawnPackageManager output

[rahulptl165]

Fixes #3864 by @mato533

• I have read the contribution documentation for this project.
• I agree to follow the code of conduct that this project follows, as appropriate.
• The changes are appropriately documented (if applicable).
• The changes have sufficient test coverage (if applicable).
• The testsuite passes successfully on my local machine (if applicable).

Summarize your changes:

• Added .trim() to pnpm config get outputs:
• Modified the retrieval of hoistPattern, publicHoistPattern, and nodeLinker to use .trim() on the results of spawnPackageManager. This removes trailing newlines (\n) from the pnpm config get output, ensuring accurate string comparisons.
• Before: "undefined\n" !== 'undefined' caused the check to misinterpret unset values as custom configurations.
• After: "undefined\n".trim() becomes "undefined", correctly triggering the node-linker check when hoist patterns are unset.

[erikian]

Thanks for the contribution! spawnPackageManager is also used in a few other places, we should probably do the trimming directly in spawnPackageManager before returning the result, so that all consumers get trimmed strings. Could you make that change?

[rahulptl165]

Yes sir !

[rahulptl165]

Hi @erikian, thanks for your feedback. i have implemented the requested changes.

[erikian]

LGTM! Just one minor suggestion.

[rahulptl165]

Implemented the suggested changes.